C# 声明枚举、枚举值描述 获取枚举值字符串 根据枚举获取枚举值描述

一、声明枚举值、枚举值描述

using System.ComponentModel;

public enum status
{
	/// 

	/// 取消
	/// 
	[Description("取消")]
	cancel,
	/// 

	/// 提交
	/// 
	[Description("提交")]
	submit,
	/// 

	/// 同意
	/// 
	[Description("批准")]
	pass,
	/// 

	/// 驳回
	/// 
	[Description("驳回")]
	reject
}

二、获取枚举值字符串、根据枚举获取枚举值描述

/// 

/// 获取枚举描述信息
/// 
/// 
/// 
public static string GetEnumDescription(this Enum enumValue) {
	string str = enumValue.ToString();
	System.Reflection.FieldInfo field = enumValue.GetType().GetField(str);
	object[] objs = field.GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute) , false);
	if (objs == null || objs.Length == 0)
		return str;
	System.ComponentModel.DescriptionAttribute da = (System.ComponentModel.DescriptionAttribute)objs[0];
	return da.Description;
}

/*
示例：string statusDes = status.submit.GetEnumDescription();
*/

/// 

/// 枚举字符串
/// 
/// 
/// 
/// 
public static string GetEnumString(this Enum enumValue) {
	return Enum.GetName(typeof(T) , enumValue);//推荐  
}

/*
示例：string status = status.submit.GetEnumString();
*/

/// 

/// 根据Description获取枚举
/// 
/// 枚举类型
/// 枚举描述
/// 枚举
public static string GetEnumName(string description)
{
	Type _type = typeof(T);
	foreach (FieldInfo field in _type.GetFields())
	{
		DescriptionAttribute[] _curDesc = field.GetDescriptAttr();
		if (_curDesc != null && _curDesc.Length > 0)
		{
			if (_curDesc[0].Description == description)
				return field.GetValue(null).ToString();
		}
	}

	return null;
}

/*
示例：string status = GetEnumName("提交");
*/

三、根据枚举值变量获取枚举描述信息

status statusEnum;
//方式1
Enum.TryParse(strStatus, out statusEnum);

//方式2
statusEnum = (status)Enum.Parse(typeof(status), strStatus);

string strStatusDes = statusEnum.GetEnumDescription();